Automatic Clock Adjustment Error Processing |
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| Error | Meaning | Detailed error code | Correction | EEPROM | ||
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| 2nd byte |
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| 03C6 | Clock data | 0001: Clock data could not | Clear the CPU | |||
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| write error | be refreshed because of a | Unit error. |
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| CPU Unit error. |
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| 0002: Clock data could not | The automatic | |||
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| be refreshed because the | clock adjustment |
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| CPU Unit could not write | function is not |
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| clock data in that operation | supported by cer- |
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| mode. |
| tain CPU Units |
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| (models, lot num- |
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| bers) if they are in |
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| RUN or MONI- |
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| TOR mode. |
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| (See note.) |
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Note (1) For details on other error log information, refer to the Operation Manual, Construction of Networks: SECTION 8 Troubleshooting.
(2)An error will occur in the following CPU Units when the automatic clock adjustment function is executed under the conditions shown in the table.
CPU Unit | Conditions |
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CPU Units manufactured on or | When the CPU execution mode is set to other |
before January 31, 2003 (lot num- | than normal mode (priority peripheral servicing |
bers 030131 or earlier): | mode, parallel processing with synchronous |
memory access mode, or parallel processing | |
with asynchronous memory access mode). | |
AND | |
When the CPU Unit operating mode is set to | |
| RUN or MONITOR mode. |
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(3)The manufacturing date can be determined from the lot number on the side or top corner of the CPU Unit.
(4)The lot numbers are as follows:
YYMMDDnnnn, in which YY indicates the last two digits of the year, MM the month, DD the day, and nnnn the serial number.
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